Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761338AbXINNP7 (ORCPT ); Fri, 14 Sep 2007 09:15:59 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758799AbXINNPq (ORCPT ); Fri, 14 Sep 2007 09:15:46 -0400 Received: from www.osadl.org ([213.239.205.134]:38945 "EHLO mail.tglx.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1756768AbXINNPp (ORCPT ); Fri, 14 Sep 2007 09:15:45 -0400 Subject: Re: cpu hotplug support broken in 2.6.23-rc3 From: Thomas Gleixner To: Pavel Machek Cc: "Rafael J. Wysocki" , Jeff Chua , rusty@rustycorp.com.au, vatsa@in.ibm.com, zwane@arm.linux.org.uk, kernel list , Len Brown In-Reply-To: <1189774257.3100.7.camel@chaos> References: <20070827104350.GA2073@elf.ucw.cz> <20070903034720.GB3655@ucw.cz> <200709031219.12846.rjw@sisk.pl> <1188822917.3406.0.camel@chaos> <20070904072744.GA30474@atrey.karlin.mff.cuni.cz> <1189713695.3974.23.camel@chaos> <20070914123816.GE1671@elf.ucw.cz> <1189774257.3100.7.camel@chaos> Content-Type: text/plain Date: Fri, 14 Sep 2007 15:15:43 +0200 Message-Id: <1189775743.3100.9.camel@chaos> Mime-Version: 1.0 X-Mailer: Evolution 2.11.92 (2.11.92-1.fc8) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1024 Lines: 27 On Fri, 2007-09-14 at 14:50 +0200, Thomas Gleixner wrote: > Pavel, > > On Fri, 2007-09-14 at 14:38 +0200, Pavel Machek wrote: > > > I have an yet untested fix, which preserves the broadcast state across > > > the offline state, but Len is looking into it as well, whether we can > > > just reevaluate the power states (and the broadcast flags) when a cpu > > > becomes online again. If Len can do that easily for 2.6.23, I'd prefer > > > that. > > > > Is there a patch you want me to test? Or does Len have anything to > > play with? > > Venki sent me an initial patch, but it has issues with the notify > ordering. Find below my "cache the broadcast flags" version for testing. Hmmpf, the flag is still cleared when the cpu goes offline. Need to take a closer look. tglx - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/